[media] videodev2.h: add VIDIOC_ENUM_FREQ_BANDS

Add a new ioctl to enumerate the supported frequency bands of a tuner.

Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

1 files changed, 30 insertions, 10 deletions

diff --git a/include/linux/videodev2.h b/include/linux/videodev2.h
index 4cf766e6f120..63c950f6fcc2 100644
--- a/include/linux/videodev2.h
+++ b/include/linux/videodev2.h
@@ -2032,6 +2032,7 @@ struct v4l2_modulator {
 #define V4L2_TUNER_CAP_RDS              0x0080
 #define V4L2_TUNER_CAP_RDS_BLOCK_IO     0x0100
 #define V4L2_TUNER_CAP_RDS_CONTROLS     0x0200
+#define V4L2_TUNER_CAP_FREQ_BANDS       0x0400
 
 /*  Flags for the 'rxsubchans' field */
 #define V4L2_TUNER_SUB_MONO             0x0001
@@ -2050,19 +2051,34 @@ struct v4l2_modulator {
 #define V4L2_TUNER_MODE_LANG1_LANG2     0x0004
 
 struct v4l2_frequency {
-        __u32                 tuner;
-        __u32                 type;     /* enum v4l2_tuner_type */
-        __u32                 frequency;
-        __u32                 reserved[8];
+        __u32   tuner;
+        __u32   type;   /* enum v4l2_tuner_type */
+        __u32   frequency;
+        __u32   reserved[8];
+};
+
+#define V4L2_BAND_MODULATION_VSB        (1 << 1)
+#define V4L2_BAND_MODULATION_FM         (1 << 2)
+#define V4L2_BAND_MODULATION_AM         (1 << 3)
+
+struct v4l2_frequency_band {
+        __u32   tuner;
+        __u32   type;   /* enum v4l2_tuner_type */
+        __u32   index;
+        __u32   capability;
+        __u32   rangelow;
+        __u32   rangehigh;
+        __u32   modulation;
+        __u32   reserved[9];
 };
 
 struct v4l2_hw_freq_seek {
-        __u32                 tuner;
-        __u32                 type;     /* enum v4l2_tuner_type */
-        __u32                 seek_upward;
-        __u32                 wrap_around;
-        __u32                 spacing;
-        __u32                 reserved[7];
+        __u32   tuner;
+        __u32   type;   /* enum v4l2_tuner_type */
+        __u32   seek_upward;
+        __u32   wrap_around;
+        __u32   spacing;
+        __u32   reserved[7];
 };
 
 /*
@@ -2630,6 +2646,10 @@ struct v4l2_create_buffers {
 #define VIDIOC_QUERY_DV_TIMINGS  _IOR('V', 99, struct v4l2_dv_timings)
 #define VIDIOC_DV_TIMINGS_CAP   _IOWR('V', 100, struct v4l2_dv_timings_cap)
 
+/* Experimental, this ioctl may change over the next couple of kernel
+   versions. */
+#define VIDIOC_ENUM_FREQ_BANDS  _IOWR('V', 101, struct v4l2_frequency_band)
+
 /* Reminder: when adding new ioctls please add support for them to
    drivers/media/video/v4l2-compat-ioctl32.c as well! */